Console not seeing Media Centre when wired through...

Question

I have an issue that is causing no end of problems. My current wired network and wifi SSIDs
BT Home Hub 2----- DHCP - Wifi 802.11g only {SSID}OLD
  |             |
  |           Sky HD Box (Wired)
  |           XBOX360_1 (Wired)
  |
TP-Link WR1043N router --- Wifi 802.11n {SSID}N
  |            |
WinXP1   WinXP2
Connected to {SSID}OLD I have:
                                          2 PS3 consoles
                                          XBOX360_2
                                          WinXP3 (laptop)
                                          WinXP4 (desktop)
Connected to {SSID}N I have:
                                          XBOX360_3
                                          3 tables
                                          4 android phones
                                          Win7_1
All hardware can connect to the internet without problems and anything connect to both {SSID}N and {SSID}OLD or wired running through the WR1043N router can communicate without issue.
WinXP1 hosts a a number of services (Web, POP, FPT) which communicate out to the internet as well as all internal devices and also hosts a Tversity Media Server. It also acts as a print server for the house with all devices taking advantage of the network printing, both Win and LRP, once again without issue.
Thanks to WMP11, WinXP1 also hosts a secondary media player and the WR1043N router also hosts a media player. All devices on both and either wireless network can see all 3 media players and play video and media flawlessly.
However I am having a problem with the 1 piece of hardware that is wired into the Home Hub itself. The device named XBOX360_1 can communicate fine on the internet (XboxLive, Lovefilm, IE) but it cannot reliably see any of the 3 media servers running on the network. Sometimes it sees nothing, then it sees them all but cannot connect, then it sees 1, lists the media available but will not play anything.
I have tried all 3 XBOX360 consoles in that port and non of them can see the media servers when wired into the Home Hub, yet all 3 can see it when wireless. I have not tried wiring the consoles into the WR1043N router but as the WinXP2 can see everything on WinXP1 fine, I am happy it is nothing to do with the TP-Link kit.
Also as anything connecting through {SSID}OLD has to pass through a wired network through WR1043N, I can say it is not a comms issue between WR1043N and HH2.
I am only left with the possiblity that something on the HH2 is blocking traffic between 2 wired ports or is introducing an increased amount of network lag, worse than over wifi. I have tried a combination of all 4 ports on the HH2 and tried 3 different network cables between HH2 and the console and nothing seems to work.
Is there any experience of there been communication issues between the ports on HH2 previously, or is there anyone out there with any more ideas because I am all out of them.
Thanks
I am guided by a force much greater than luck.

Answer 1

ps3 Wired to HH - dlna protocol error 7531 - Appears to be a generic comms failure.
Win7 Wired to HH  - intermittant, slow, not Ideal
** Decided rather than moving my consoles about I would swap out the routers first **
Swap out the WR1043N entirely for a switch - same results as previous test when running through HH. No/intermittant connection to DLNA/Media servers slow/intermittant connection over HTTP, port 8080 etc
Now the good news
Swap out the HH2 entirely for a switch -  flawless performance across all connections and protocols. HH2 spurred off the switch so still had internet enabled and HH still acted as DNS, the only difference is the XBOX is not passing through the HH to talk to media server.
It appears there is some interferance being introduced between the ethernet ports on the HH2 so time to replace it. The Win7 laptop is able to compensate for this to some expent but the consoles cannot.
I unplugged the Sky box which also plugs into the HH and it does seem to at least transmit the Media Server library, but as soon as streaming starts, it cuts off again.
I only see 3 solutions
1. Ask BT for a new HH, unlikely due to its age
2. move to another provider and get a new modem/router free
3. buy another modem and move the WR1043N, great more money and not what I bought the WR1043N
Personally I am thinking option 2 is the least hassle and most cost effective. Thanks for the bounce off anyway.
I am guided by a force much greater than luck.